walker



. embodying novel and check, said means also including `an ele# better understoodd :company-ing drawings, w rein:

' partly` section an Patented July 31, 1923.

UNITED STATESv PATENT o1-1=1c1: l

inner M. WALKER, or GRAYBURG, Taxes annex-comentan Meenemen.

'Application filed August 6, 1921. Serial No. 490,238.

T o ali whom it may concern.'

Be it known that I, HARBYAM. llALKER, a citiuen of thc United States, residing ai. (irayburg, inthe county of Hardin and State of Texas, have invented certainneiv and useful Improvements in Check-Controlled Mechanisms, of which the following' isa specification, reference Vbein-g had vto' the accompanying drawings. y

This invention relates to check controlled mechanisms and has relation more particu-r larly to a mechanism of this general character especially designed and adapted for use in connection with an endwise movable member, such as the operatingr ruck for the piston com rised in a gasoline or kindred liquid vendlngl machine, and it is an ohject of the invention to'provide a mechanism of this general character having novel and improved menus whereby said endwise movable member is normally held or locked against` movement in a direction to effect -n lift or delivery of the liquid.

Y Another ob]ect of the invention is to'provide a mechanism of this general character improved means whereb an endwis'e .movable member is normal y held against movement in one direction and which means is rendered -inactive under the influence of a suitable ment for holding the member against reverse movement when'said vmeans is in a position to permit the first named endwise movement of the member.

The invention consists in um details of.` construction and in the combination and arrangement of the several ,parts of my im# proved check controlled mechanism whereb certain important advantagcssare attains i i way elevation tail Y Figure 3 is an enlarged fragmentary'view 'ofmy improved Yiechanisln illustrating cer- 60 tain of the parts in 'a second position;

.Figure 4 is a sectional view taken substantially on the line 4-4 of Figure 3; and Figure 5 is a detail sectional view taken substantially on the line 5-5 of Figure 3. 66

As disclosed in the accompanying drawings. l denotes the operating rack or member for the piston of a gasoline vending machine which yextends upwardly Within a,

housing H. The mp2 of the housing H is 70 provided with a tubular depending slecviI or guide member 3 through'which the upper portion of the rack or member 1 vv'orksgdut` mg a delivery operation. The housing H iis 4provided with a door 4' adaptedto he 75 locked `in closed position, said door providing.r means whereby access may be had to the mechanism arranged within said housing H.

llxtcniling inwerdl. and downwardly 'of thc housing l'l-i's a l: y

portion of a substantially horizontal.-

with within the housin H and which receives the checks e'ected rom the 'runway 6 as will hereinafter e explained.`

The top wall of the adjacent the runway 6 ofthe check C 'and the requisite coaction o holding` means associated with the rack or holding member 1. The portion of the-rum.

6 immediatelybelow the', lowerV end 95' of the chute 5'is of restricted diemetenys is particularly illustrated in Figure' 5, sof that the cheek when received tln'sreln is main# tained in substantiall a vertical position in order that said chec form the function desired. l

vSnu 1 Working within this restricted 'ortion o t e runway 6 is a plunger y8 whic .is

constantly maintained at the limit of its i !,1- ward movement by an ex ansible member 9. ,105

This member 9, as herein disclosed, oomgrises a coil spring encircling the outwardly rected stem 10 .carried 'by the plunger 8.

said spring being interposed between the plungerv 8 and the cap 11 l0 inner end of the or the like closing thelouter end of the run# way e. Theme; `ia `n of a length u extend 4illustrating my improved mechanism in de ute 5, the lowerl end ,30 portion of which communicates with the inner end ly disposed runway 6. The inner end ofthe y runway 6 is open to provide communication the collecting receptacle? supported chute 5 immediately. is cut away, as at a, 00 vto facilitate the ejecting said checkwith tho z.

may `effectively per-r 10 tion of the plunger 8 til) exteriorly of the housing and said extended end ortion is provided with a knob 12 or the like to facilitate the desired manipulaand particularly to retract the same.

14 denotes a substantially' V-shaped do having its apex portion pivotaily supporte as at 15, by a side wall of the housing H, the arms of said dog alternately engaging the teeth 16 in the adjacent marginal portion of the rack or member 1, one of said arms servin to hold the rack or member 1 against en Wise movement in one direction and the second arm serving tohold thev racl; against en'dwise movement in the opposite direction. Extending outwardly from the pivoted or apex portlon of the dog'l is an arm 17 y Bearing against the outer end ol the arm 17 is an end portion oflan expansible spring 18, the op oste end 4of lsaid siring hearing a ainst a lock 19 extending laterally from t e lower part of theichute 5. This spring 18 as the arm 1T passes beyond the horizontal center serves to maintain either of the arms of the dog 14 in proper engagement with the teeth 16 whereby the rack or member 1 is held against er lwise movement in one direi-- tion yet free to move` in the opposite direction until the secoi'id arm of the dog 14 is engaged with the rack or member l.

The outer end portion of the arm 1T rotatably supports at one side thereoi a roller 20 which, when the lower arm ot the dog 14 is engaged with the member or rack 1 to hold the same against upward movement. is. positioned in close proximity to the inner end ot' the runway 6 and in the path oftl travel ot' the check C when within the run way f5 in advance of the plunger 5i so that as the check C is forced under lhe roller lll the lower arm of the dog ll will lie 'freed troni the racll' or member l to permit the sume to have upward endwise movement. During this movement. the `scrond or upper :lrni ol' the dog 14 is operatively engaged with the rack or meniber l lo hold the sume against reverse cndwise movement. This position of the do;r 14, is maintained liv the spring 1S as the wheel; C will court willi the roller ill to cause the arm l? to be swung upwne-llv beyond a horizontal renier. s the 'heck passes under the noller 12H, it is received within the recoptnrie 7.

l'lngaged with the rio-k or member i is a ronventional gear or pinion 2l operated exteriorly of the housing ll hy the crank 22 or its equivalent. Extending from the dog 14 toward the r-.nflc or member l and suhstantially coplonar with the arm l is :t spring' arm 9.5i. This arm 23 ovcrlics a side of the rack or member 1 and is in the path of travel of a pin 524 carried by tluA lower portion of the rack or member 1. As the rack or member 1 moveswupwardly, the pin 24 comes into contact with the spring arm 23 resultin in the upper arm of the dog 14 being dlsengaged from the rack or member 1 and the lower arm of said dog engaged with the rack or member 1 whereby sai rack or member 1 is held against further upward movement or free to be moved in the reverse direction.

The pin Q4 is ad'ustably en member or rack 1 t rough the on itudinally disposed slot 25. Bv adjustin the position of the pin 24 lengthwise of t e'member ol' rack 1, the length of the upward stroke of the rack or member llmay be regulated as desired so -that the quantity of asoline or other liquid delivereddurmg t e upward movement of the rack or member 1 may be varied and particularly as may be necessitated by the cost or price of the gasoline or the like.

With. a asoline station or the like equipped wit a mechanism constructed in accordance with an embodiment of my in vention, the station may be operated u n the deposit of a coinof desired value wiiin the chute 5 so that a customer can help himself without the assistance of an attendant and which is particularly desirable during the hours when it is not convenient for the owner to have his place of business open.

lt is to he understood that after the check or coin C is deposited in the chute 5, the plunger S is moved by pull upon the stem 1U a distance sufficient to permit the check to drop in the runway 6 in advance of the plunger 8. The stem 10 is then released and the. tension of the spring or member 9 is suflicient to force the check or coin C under the roller 20 and thereby operate the dog 14 to permit. the rack or member 1 to be moved upwardly upon requisite operation of the operating member or crank 22.

Then the dog 14 is moved into a neutral position or in a osition with both of the arms free from tile rack, the pump can be operated without the use of the check controlled mechanism.

From the foregoing descripi ion it is thought to lie obvious that a cheri; controlled mechanism constructed in acuerden@ with my invention is particularly well adapted lor use by reason of the convenience and facility with which it may be assembled and operated, and it will also be, obvious that my invention is susceptible of some change an modification `without departing Afrom the priinriples arid spirit thereof and for this reason l lo not wish to be understood as limiting mlysclf to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice exceiif as hereinafter claimed.

I clamp:

1. ln combination with :i member supported fpr movement in opposite directions,

aged with the d'in Ieo

a do pivotally supported adjacent to said mem r and provided with two arms, one

. of said arms engaging the member to hold the same against movement in one direction when the second arm is f r of the member, the second arm engaging the member to hold the same against `movement in the opposite direction when the lrstnamed arm is free of the member, check controlled means for swinging the do in one direction, a spring arm carried y the dog and extending toward the member, an element carried by the member and contacting with the arm of the dog upon movement of the member in one direction for swinging the dog in one direction, and means for mo'ving the member.

2. In combination with a member supported for endwise movement, a dog pivotally supported adjacent the member and provided with a pair of arms one of said arms en agin the member when the other arm is ee ereroxn to hold the member against movement in one direction, the second arm engaging the member to hold the member against movement ,in the opposite direction when the first named arm is free therefrom, check controlled means for swinging the dog to engage one arm and disengage the second arm from the member, an expansible member co-acting with the dog for urging each of the arms into contact with the member, and means for moving the member.

3. In combination ported for endwise with a member supmovement, a .substan- 'tially V-shaped dog pivotally supported adjacent the member, one of the arms of the dog engagil the member when the other arm,V is freen'ierefrom to hold the member agaihst movement in one direction, a sgcond arniv engaging the member to hdldzthe same against movement in the oppositegdirection when the first named arm is free therefrom, check controlled means for swinging the do in one direction, co-acting meanscarrie by the dog and the member for'moving the dog in the opposite direction upon predetermined movement of the member, means co-acting with the dog arm carried by the dog and overging for maintaining either of the arms of the dog in engagementwith the member, and means for moving the member. a

4. In combination with a member supporte for endwise movement, ado pivotally sup orted adjacent the mem er and provide with a pairof arms, one of said arms engaging the member when the other is free therefrom to hold the member against movement in one direction, a second arm engaging the member to hold the same a inst movement inthe Vopposite direction w en the first named arm is free therefrom, check controlled means for swinging the dog to enga e one arm and disengage the second arm rom the'member, an addltionllll t e side of the member, an outstan g pin carried by the member and contacting with the last named arm of the dog upon'V predetermined movement of the direction for swinging the dog to engage one arm and disengage the second arm from the member.

5. In combination with a member supported for endwise movement, a dog pivotally supported adjacent the member and provided with a pair of arms, one of said arms engaging the member when the other is free therefrom to hold the member against movement in one direction, a second arm engaging the member to hold the same against movement in the opposite direction when the first named arm is free therefrom, check controlled means for swinging the dog to engage one arm and disengage the second arm from the member, an additional arm carried by the dog and overlying the side of the member, an outstanding pin carried by the member and member in one t contacting with the last named arm of the l dog upon predetermined movement. of the member in one direction for swinging the dog to engage one arm and disen age the second arm from the member, anl means for adjusting the pin lengthwise of the member.

In testimony whereof I hereunto aiiix my signature.

HARRY M. WALKER` 

